04.07.11 18:37, Maksym Veremeyenko написав(ла):
> 03.07.11 23:06, Dan Dennedy написав(ла):
>> On Sun, Jul 3, 2011 at 12:48 PM, Maksym Veremeyenko<ve...@m1stereo.tv>
>> wrote:
>>> On Sun, July 3, 2011 10:01 pm, Dan Dennedy wrote:
>>>> 2011/7/3 Maksym Veremeyenko<ve...@m1stereo.tv>:
>>>>> Hi,
>>>>>
>>>>> playing files in a loop mode in melted cause a leak of file descriptors
>>>>> that
>>>>> seen well from /proc/<process id>/fd/<file no>.
>>>>>
>>>>> the problem comes from avformat's producer re-open code that lost
>>>>> release of
>>>>> audiostream context.
> [...]
>> Please test my latest commits. In my analysis and testing while
>> working on these fixes, I found it is not at all safe to close the
>> audio format and codec contexts at this point - think parallel.
>>
>
> i am not sure it it regression or related, but something influent a
> decklink output, to be precise, out output. After hour or two i start
> receive messages about decklink audio buffer underflow - it wrote less
> samples then 1920....
>
>
seems to me that latest update to avformat producer uncover an audio
preroll problem to decklink consumer.
applying simple patch:
diff --git a/src/modules/decklink/consumer_decklink.cpp
b/src/modules/decklink/consumer_decklink.cpp
index 0fb2361..0179de3 100644
--- a/src/modules/decklink/consumer_decklink.cpp
+++ b/src/modules/decklink/consumer_decklink.cpp
@@ -54,6 +54,7 @@ private:
int m_isKeyer;
IDeckLinkKeyer* m_deckLinkKeyer;
bool m_terminate_on_pause;
+ uint32_t m_acnt;
IDeckLinkDisplayMode* getDisplayMode()
{
@@ -428,6 +429,16 @@ public:
virtual HRESULT STDMETHODCALLTYPE ScheduledFrameCompleted(
IDeckLinkVideoFrame* completedFrame, BMDOutputFrameCompleti
{
+ uint32_t cnt;
+ m_deckLinkOutput->GetBufferedAudioSampleFrameCount(&cnt);
+ if(cnt != m_acnt)
+ {
+ mlt_log_verbose( getConsumer(),
+ "ScheduledFrameCompleted:
GetBufferedAudioSampleFrameCount %d -> %d, m_count=%lld\n",
+ m_acnt, cnt, m_count );
+ m_acnt = cnt;
+ };
+
// When a video frame has been released by the API,
schedule another video frame to be output
// ignore handler if frame was flushed
makes very interesting output:
[...]
[consumer decklink] ScheduledFrameCompleted:
GetBufferedAudioSampleFrameCount 1919 -> 2877, m_count=20164
(5) AS-RUN U0 "/tst_E0001531_43.dv" len 773 pos 725
[consumer decklink] ScheduledFrameCompleted:
GetBufferedAudioSampleFrameCount 2877 -> 3836, m_count=20937
(5) AS-RUN U0 "/BNC00975.mov" len 748 pos 702
[dv @ 0x80da0a0] Estimating duration from bitrate, this may be inaccurate
[dv @ 0x82ff1c0] Estimating duration from bitrate, this may be inaccurate
[consumer decklink] ScheduledFrameCompleted:
GetBufferedAudioSampleFrameCount 3836 -> 4794, m_count=21685
(5) AS-RUN U0 "/tst_E0001531_43.dv" len 773 pos 728
[consumer decklink] ScheduledFrameCompleted:
GetBufferedAudioSampleFrameCount 4794 -> 5754, m_count=22458
(5) AS-RUN U0 "/BNC00975.mov" len 748 pos 705
[dv @ 0x82ff1c0] Estimating duration from bitrate, this may be inaccurate
[dv @ 0x8326820] Estimating duration from bitrate, this may be inaccurate
(5) AS-RUN U0 "/tst_E0001531_43.dv" len 773 pos 732
[...]
(5) AS-RUN U0 "/BNC00975.mov" len 748 pos 696
[dv @ 0x80da0a0] Estimating duration from bitrate, this may be inaccurate
[dv @ 0x80d8580] Estimating duration from bitrate, this may be inaccurate
[consumer decklink] ScheduledFrameCompleted:
GetBufferedAudioSampleFrameCount 5754 -> 6715, m_count=29290
[consumer decklink] ScheduledFrameCompleted:
GetBufferedAudioSampleFrameCount 6715 -> 5754, m_count=29291
(5) AS-RUN U0 "/tst_E0001531_43.dv" len 773 pos 722
for some reason decklink do not flush or drop some audio packet and as
result it overrun after one second samples. i can't definitely find a
reason, but i will look deeper...
--
________________________________________
Maksym Veremeyenko
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